第一步：獲取mysql YUM源
進入mysql官網獲取RPM包下載地址
https://dev.mysql.com/downloads/repo/yum/
點擊下載
獲取到下載鏈接：
https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm
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第二步：下載和安裝mysql源
•進入mysql文件夾，沒有的自行創建
[root@VM_0_10_centos /]# cd /usr/local/mysql/[root@VM_0_10_centos mysql]#
•下載源安裝包
[root@VM_0_10_centos mysql]# wget https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm--2018-08-04 10:29:39-- https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpmResolving repo.mysql.com (repo.mysql.com)... 23.219.33.198Connecting to repo.mysql.com (repo.mysql.com)|23.219.33.198|:443... connected.HTTP request sent, awaiting response... 200 OKLength: 25820 (25K) [application/x-redhat-package-manager]Saving to: ‘mysql80-community-release-el7-1.noarch.rpm'100%[==========================================================================>] 25,820 112KB/s in 0.2s 2018-08-04 10:29:40 (112 KB/s) - ‘mysql80-community-release-el7-1.noarch.rpm' saved [25820/25820][root@VM_0_10_centos mysql]# lltotal 28-rw-r--r-- 1 root root 25820 Apr 18 13:24 mysql80-community-release-el7-1.noarch.rpm[root@VM_0_10_centos mysql]#
•安裝mysql源
[root@VM_0_10_centos mysql]# yum -y localinstall mysql80-community-release-el7-1.noarch.rpm
第三步：在線安裝MySQL
[root@VM_0_10_centos mysql]# yum -y install mysql-community-server
下載東西比較多，等幾分鐘。
第四步：啟動Mysql服務
[root@VM_0_10_centos mysql]# systemctl start mysqld
第五步：設置開機啟動
[root@VM_0_10_centos mysql]# systemctl enable mysqld[root@VM_0_10_centos mysql]# systemctl daemon-reload
第六步：修改root本地登錄密碼
mysql安裝完成之后，在/var/log/mysqld.log文件中給root生成了一個臨時的默認密碼。用grep命令搜一下
[root@VM_0_10_centos mysql]# grep "A temporary password is generated for root@localhost" /var/log/mysqld.log 2018-08-02T02:19:55.829527Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: !J:KUwU9y0ZR2018-08-02T04:49:34.979689Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: pw</s9,Wivm22018-08-04T02:40:46.781768Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: nNyK,Y)Wd0-G[root@VM_0_10_centos mysql]#
這里有三條搜索結果，因為我重復裝了3次MySQL，如果第一次安裝是只會有一條的。
直接拿到臨時默認密碼 : nNyK,Y)Wd0-G
•登錄MySQL
[root@VM_0_10_centos mysql]# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or /g.Your MySQL connection id is 8Server version: 8.0.12Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.mysql>
•更改root賬戶臨時密碼
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Pwd123@easyoh.net';Query OK, 0 rows affected (0.03 sec)mysql>
Pwd123@easyoh.net 請替換成你自己的密碼。
(備注 mysql8.0默認密碼策略要求密碼必須是大小寫字母數字特殊字母的組合，至少8位)
第七步：創建新用戶、授權、遠程登錄（不要直接使用root賬戶登錄）
•創建easyoh-mp用戶并且授權遠程登錄
mysql> CREATE USER 'easyoh-mp'@'%' IDENTIFIED BY 'Pwd123@easyoh.net';Query OK, 0 rows affected (0.04 sec)mysql> GRANT ALL ON *.* TO 'easyoh-mp'@'%';Query OK, 0 rows affected (0.03 sec)mysql>
•在sqlyog客戶端用easyoh-mp賬戶登錄（其他客戶端也可以，隨意）
發現會報plugin caching_sha2_password錯誤。這是因為MySQL8.0密碼策略默認為caching_sha2_password。與5.7有所不同。
•進入MySQL數據庫查詢user表信息
mysql> use mysql;Database changedmysql> select user,host,plugin from user;+------------------+-----------+-----------------------+| user | host | plugin |+------------------+-----------+-----------------------+| easyoh-mp | % | caching_sha2_password || mysql.infoschema | localhost | caching_sha2_password || mysql.session | localhost | caching_sha2_password || mysql.sys | localhost | caching_sha2_password || root | localhost | caching_sha2_password |+------------------+-----------+-----------------------+5 rows in set (0.00 sec)mysql>
發現確實是caching_sha2_password
•依次執行下面語句
mysql> ALTER USER 'easyoh-mp'@'%' IDENTIFIED BY 'Pwd123@easyoh.net' PASSWORD EXPIRE NEVER; Query OK, 0 rows affected (0.04 sec)mysql> ALTER USER 'easyoh-mp'@'%' IDENTIFIED WITH mysql_native_password BY 'Pwd123@easyoh.net'; Query OK, 0 rows affected (0.05 sec)mysql> FLUSH PRIVILEGES;Query OK, 0 rows affected (0.01 sec)mysql>
再次登錄就可以登錄成功了。
第8步：編碼
mysql> show variables like '%character%';+--------------------------+--------------------------------+| Variable_name | Value |+--------------------------+--------------------------------+| character_set_client | utf8mb4 || character_set_connection | utf8mb4 || character_set_database | utf8mb4 || character_set_filesystem | binary || character_set_results | utf8mb4 || character_set_server | utf8mb4 || character_set_system | utf8 || character_sets_dir | /usr/share/mysql-8.0/charsets/ |+--------------------------+--------------------------------+8 rows in set (0.01 sec)mysql>
MySQL8.0默認就是utf8mb4編碼，無需更改。
OK 至此 Mysql安裝配置完畢；
全流程操作記錄
[root@VM_0_10_centos ~]# [root@VM_0_10_centos /]# cd /usr/local/mysql/[root@VM_0_10_centos mysql]# wget https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm--2018-08-04 10:29:39-- https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpmResolving repo.mysql.com (repo.mysql.com)... 23.219.33.198Connecting to repo.mysql.com (repo.mysql.com)|23.219.33.198|:443... connected.HTTP request sent, awaiting response... 200 OKLength: 25820 (25K) [application/x-redhat-package-manager]Saving to: ‘mysql80-community-release-el7-1.noarch.rpm'100%[==========================================================================>] 25,820 112KB/s in 0.2s 2018-08-04 10:29:40 (112 KB/s) - ‘mysql80-community-release-el7-1.noarch.rpm' saved [25820/25820][root@VM_0_10_centos mysql]# lltotal 28-rw-r--r-- 1 root root 25820 Apr 18 13:24 mysql80-community-release-el7-1.noarch.rpm[root@VM_0_10_centos mysql]# yum -y localinstall mysql80-community-release-el7-1.noarch.rpm Loaded plugins: fastestmirror, langpacksExamining mysql80-community-release-el7-1.noarch.rpm: mysql80-community-release-el7-1.noarchMarking mysql80-community-release-el7-1.noarch.rpm to be installedResolving Dependencies--> Running transaction check---> Package mysql80-community-release.noarch 0:el7-1 will be installed--> Finished Dependency ResolutionDependencies Resolved================================================================================================================================================================================================================= Package Arch Version Repository Size=================================================================================================================================================================================================================Installing: mysql80-community-release noarch el7-1 /mysql80-community-release-el7-1.noarch 31 kTransaction Summary=================================================================================================================================================================================================================Install 1 PackageTotal size: 31 kInstalled size: 31 kDownloading packages:Running transaction checkRunning transaction testTransaction test succeededRunning transactionWarning: RPMDB altered outside of yum. Installing : mysql80-community-release-el7-1.noarch 1/1 Verifying : mysql80-community-release-el7-1.noarch 1/1 Installed: mysql80-community-release.noarch 0:el7-1 Complete![root@VM_0_10_centos mysql]# yum -y install mysql-community-serverLoaded plugins: fastestmirror, langpacksLoading mirror speeds from cached hostfileepel 12641/12641Resolving Dependencies--> Running transaction check---> Package mysql-community-server.x86_64 0:8.0.12-1.el7 will be installed--> Processing Dependency: mysql-community-common(x86-64) = 8.0.12-1.el7 for package: mysql-community-server-8.0.12-1.el7.x86_64--> Processing Dependency: mysql-community-client(x86-64) >= 8.0.0 for package: mysql-community-server-8.0.12-1.el7.x86_64--> Running transaction check---> Package mysql-community-client.x86_64 0:8.0.12-1.el7 will be installed--> Processing Dependency: mysql-community-libs(x86-64) >= 8.0.0 for package: mysql-community-client-8.0.12-1.el7.x86_64---> Package mysql-community-common.x86_64 0:8.0.12-1.el7 will be installed--> Running transaction check---> Package mysql-community-libs.x86_64 0:8.0.12-1.el7 will be installed--> Finished Dependency ResolutionDependencies Resolved================================================================================================================================================================================================================= Package Arch Version Repository Size=================================================================================================================================================================================================================Installing: mysql-community-server x86_64 8.0.12-1.el7 mysql80-community 349 MInstalling for dependencies: mysql-community-client x86_64 8.0.12-1.el7 mysql80-community 26 M mysql-community-common x86_64 8.0.12-1.el7 mysql80-community 541 k mysql-community-libs x86_64 8.0.12-1.el7 mysql80-community 2.2 MTransaction Summary=================================================================================================================================================================================================================Install 1 Package (+3 Dependent packages)Total download size: 377 MInstalled size: 1.7 GDownloading packages:(1/4): mysql-community-common-8.0.12-1.el7.x86_64.rpm | 541 kB 00:00:05 (2/4): mysql-community-client-8.0.12-1.el7.x86_64.rpm | 26 MB 00:00:12 (3/4): mysql-community-server-8.0.12-1.el7.x86_64.rpm | 349 MB 00:02:26 (4/4): mysql-community-libs-8.0.12-1.el7.x86_64.rpm | 2.2 MB 00:03:37 -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total 1.7 MB/s | 377 MB 00:03:43 Running transaction checkRunning transaction testTransaction test succeededRunning transaction Installing : mysql-community-common-8.0.12-1.el7.x86_64 1/4 Installing : mysql-community-libs-8.0.12-1.el7.x86_64 2/4 Installing : mysql-community-client-8.0.12-1.el7.x86_64 3/4 Installing : mysql-community-server-8.0.12-1.el7.x86_64 4/4 Verifying : mysql-community-common-8.0.12-1.el7.x86_64 1/4 Verifying : mysql-community-libs-8.0.12-1.el7.x86_64 2/4 Verifying : mysql-community-client-8.0.12-1.el7.x86_64 3/4 Verifying : mysql-community-server-8.0.12-1.el7.x86_64 4/4 Installed: mysql-community-server.x86_64 0:8.0.12-1.el7 Dependency Installed: mysql-community-client.x86_64 0:8.0.12-1.el7 mysql-community-common.x86_64 0:8.0.12-1.el7 mysql-community-libs.x86_64 0:8.0.12-1.el7 Complete![root@VM_0_10_centos mysql]# systemctl start mysqld[root@VM_0_10_centos mysql]# systemctl enable mysqld[root@VM_0_10_centos mysql]# systemctl daemon-reload[root@VM_0_10_centos mysql]# grep "A temporary password is generated for root@localhost" /var/log/mysqld.log 2018-08-02T02:19:55.829527Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: !J:KUwU9y0ZR2018-08-02T04:49:34.979689Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: pw</s9,Wivm22018-08-04T02:40:46.781768Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: nNyK,Y)Wd0-G[root@VM_0_10_centos mysql]# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or /g.Your MySQL connection id is 8Server version: 8.0.12Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Pwd123@easyoh.net';Query OK, 0 rows affected (0.03 sec)mysql> CREATE USER 'easyoh-mp'@'%' IDENTIFIED BY 'Pwd123@easyoh.net';Query OK, 0 rows affected (0.04 sec)mysql> GRANT ALL ON *.* TO 'easyoh-mp'@'%';Query OK, 0 rows affected (0.03 sec)mysql> use mysql;Database changedmysql> select user,host,plugin from user;+------------------+-----------+-----------------------+| user | host | plugin |+------------------+-----------+-----------------------+| easyoh-mp | % | caching_sha2_password || mysql.infoschema | localhost | caching_sha2_password || mysql.session | localhost | caching_sha2_password || mysql.sys | localhost | caching_sha2_password || root | localhost | caching_sha2_password |+------------------+-----------+-----------------------+5 rows in set (0.00 sec)mysql> ALTER USER 'easyoh-mp'@'%' IDENTIFIED BY 'Pwd123@easyoh.net' PASSWORD EXPIRE NEVER; Query OK, 0 rows affected (0.04 sec)mysql> ALTER USER 'easyoh-mp'@'%' IDENTIFIED WITH mysql_native_password BY 'Pwd123@easyoh.net'; Query OK, 0 rows affected (0.05 sec)mysql> FLUSH PRIVILEGES;Query OK, 0 rows affected (0.01 sec)mysql> show variables like '%character%';+--------------------------+--------------------------------+| Variable_name | Value |+--------------------------+--------------------------------+| character_set_client | utf8mb4 || character_set_connection | utf8mb4 || character_set_database | utf8mb4 || character_set_filesystem | binary || character_set_results | utf8mb4 || character_set_server | utf8mb4 || character_set_system | utf8 || character_sets_dir | /usr/share/mysql-8.0/charsets/ |+--------------------------+--------------------------------+8 rows in set (0.01 sec)
這里有個問題，新密碼設置的時候如果設置的過于簡單會報錯：
原因是因為MySQL有密碼設置的規范，具體是與validate_password_policy的值有關：
MySQL完整的初始密碼規則可以通過如下命令查看：
mysql> SHOW VARIABLES LIKE 'validate_password%';+--------------------------------------+-------+| Variable_name | Value |+--------------------------------------+-------+| validate_password_check_user_name | OFF || validate_password_dictionary_file | || validate_password_length | 4 || validate_password_mixed_case_count | 1 || validate_password_number_count | 1 || validate_password_policy | LOW || validate_password_special_char_count | 1 |+--------------------------------------+-------+7 rows in set (0.01 sec)
密碼的長度是由validate_password_length決定的，而validate_password_length的計算公式是：
validate_password_length = validate_password_number_count + validate_password_special_char_count + (2 * validate_password_mixed_case_count)
我的是已經修改過的，初始情況下第一個的值是ON，validate_password_length是8?？梢酝ㄟ^如下命令修改：
mysql> set global validate_password_policy=0;mysql> set global validate_password_length=1;
總結
以上所述是小編給大家介紹的CentOS 7.4 64位安裝配置MySQL8.0的詳細步驟，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對VeVb武林網網站的支持！
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